1/*
2 * Copyright (c) 2022 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 *     http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16#include <stdio_ext.h>
17#include "functionalext.h"
18
19const char *path = "/data/fpending.txt";
20
21/**
22 * @tc.name      : __fpending_0100
23 * @tc.desc      : The parameter is valid, f is the file opened in w mode, there is data in the buffer,
24 *                 get the number of bytes in the current buffer.
25 * @tc.level     : Level 0
26 */
27void __fpending_0100(void)
28{
29    char *str = "This is a test";
30    FILE *fp = fopen(path, "w");
31    EXPECT_PTRNE("__fpending_0100", fp, NULL);
32
33    fputs(str, fp);
34    size_t ret = __fpending(fp);
35    EXPECT_TRUE("__fpending_0100", ret > 0);
36    EXPECT_EQ("__fpending_0100", ret, strlen(str));
37
38    fclose(fp);
39    remove(path);
40}
41
42/**
43 * @tc.name      : __fpending_0200
44 * @tc.desc      : The parameter is valid, f is the file opened in w mode, there is no data in the buffer,
45 *                 et the number of bytes in the current buffer.
46 * @tc.level     : Level 1
47 */
48void __fpending_0200(void)
49{
50    char *str = "This is a test";
51    FILE *fp = fopen(path, "w");
52    EXPECT_PTRNE("__fpending_0200", fp, NULL);
53
54    fputs(str, fp);
55    fflush(fp);
56    size_t ret = __fpending(fp);
57    EXPECT_EQ("__fpending_0200", ret, 0);
58
59    fclose(fp);
60    remove(path);
61}
62
63/**
64 * @tc.name      : __fpending_0300
65 * @tc.desc      : The parameter is valid, f is the file opened in r mode, and the number of bytes in
66 *                 the current buffer cannot be obtained.
67 * @tc.level     : Level 2
68 */
69void __fpending_0300(void)
70{
71    char *str = "This is a test";
72    FILE *fp = fopen(path, "w");
73    EXPECT_PTRNE("__fpending_0300", fp, NULL);
74
75    fputs(str, fp);
76    fclose(fp);
77
78    FILE *ffp = fopen(path, "r");
79    size_t ret = __fpending(ffp);
80    EXPECT_EQ("__fpending_0300", ret, 0);
81
82    fclose(ffp);
83    remove(path);
84}
85
86int main(int argc, char *argv[])
87{
88    __fpending_0100();
89    __fpending_0200();
90    __fpending_0300();
91    return t_status;
92}